JPS5854151A - Laminate waterproof execution - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a laminated waterproof construction method, and more particularly to a construction method for laminating and adhering two or more waterproof sheets in order to waterproof an underlying surface.

2. Description of the Related Art Conventionally, when waterproofing the subsurface of a building structure, water tank, etc., a waterproof sheet is sometimes developed and pasted onto the subsurface.

Waterproofing construction methods using this tarpaulin sheet include the so-called single-layer construction method, which waterproofs a large area by piecing together a single sheet, and the so-called single-layer construction method, in which two or more sheets are pasted together. There is a multilayer construction method.

Among the above, the former single-layer construction method has the advantage of being able to waterproof a vast base surface in a relatively short construction period, but the sheet used for single-layer construction has a high thickness of around 1.0W. Because it is a molecular sheet, it is thin and prone to openings due to breakage, and it is difficult to ensure watertightness at the joints at the ends of the sheets, making it easy for water to leak from the joints. There were some drawbacks.

On the other hand, the latter multi-layered system avoids the risk of water leakage as with single-layered systems by shifting the joints of the upper and lower waterproof sheets, but it is possible to avoid the risk of water leakage as with single-layered systems. After bonding with adhesive, if the upper layer waterproof sheet is bonded to the lower layer waterproof sheet with a solvent-based adhesive, the solvent of the adhesive applied between the base surface and the lower layer waterproof sheet will prevent the lower layer from being waterproof. The sheet swells and causes so-called blistering, which makes it difficult to bond the upper layer of waterproof sheet together.Also, this blistering makes it difficult to completely bond the ends of the waterproof sheet together. This had the disadvantage that waterproof properties could not be obtained.

Furthermore, in any of the above cases, since the waterproof sheet is a polymer sheet, when it is unfolded, air is likely to be trapped between the base surface or the lower layer of the waterproof sheet. It has the disadvantage that it is difficult to achieve complete adhesion on a flat surface.

In view of the above-mentioned drawbacks, this invention uses a laminated waterproof construction method that allows for more complete waterproofing, and allows for complete adhesion of joints without causing blisters in each layer.

Moreover, it was developed with the aim of providing an easy-to-perform laminated waterproof construction method, in which an adhesive solution is applied to the base surface so that it becomes virtually non-adhesive or weakly adhesive when no pressure is applied. After drying, a first waterproof sheet that has been subjected to an adhesive treatment that is non-adhesive at room temperature is adhered thereon, and then a polymer sheet, a self-adhesive layer, and a mesh sheet are attached in this order to the surface of the first waterproof sheet. It is characterized in that the second waterproof sheets formed by lamination are bonded together via the mesh sheet surface of the second waterproof sheets.

Next, the present invention will be explained with reference to explanatory diagrams showing the state of implementation.

The drawing is a perspective view showing the state of implementation of the invention.

When performing waterproofing on the base surface 1, this invention uses a solvent-based or solvent-free adhesive that is not sticky when dry to the touch after application, such as a chloroprene-based adhesive, etc. is applied onto the base surface 1, dried to become substantially non-adhesive or weakly adhesive when no pressure is applied, and then adhesive treatment 3A, which is non-adhesive at room temperature, is applied to both sides of the first waterproof material. After the sheet 3 is spread, it is bonded under pressure using a roller or the like, and then a polymer sheet 4A, a self-adhesive adhesive layer 4B, and a mesh sheet 4C are laminated in this order on the first waterproof sheet 3. It is constructed by bonding two waterproof sheets 4 together via a mesh sheet 40 of the second waterproof sheet 4.

In the above, the first waterproof sheet 3 and the second waterproof sheet 4
I/i-polymer waterproof sheets are used, and suitable are general polymer waterproof sheets such as vulcanized rubber sheets, plastic sheets such as vinyl chloride and polyethylene, and asphalt roofing sheets.

In addition, the second waterproof sheet 4 is made by combining water-resistant fibers or films in a lattice pattern, and is attached to the second waterproof sheet 4 through a self-adhesive adhesive layer 4B. It is glued.

Since this invention is constructed as described above, when pasting the first waterproof sheet 3, even though the adhesive is applied to the base surface 1, it has no or weak adhesiveness when no pressure is applied. Therefore, the first waterproof sheet 3 is placed on the base surface 1.
After expanding.

The position can be adjusted by pulling this first waterproof sheet 3, and the position can be reliably aligned. Therefore, even a sheet with a large area can be easily spread on the base surface, and When the second tarpaulin sheet 4 is spread out on the first tarpaulin sheet 3, the second tarpaulin sheet 4 is spread out through the mesh sheath 40, so that the air between the sheets is removed by the mesh sheath 40. It is discharged smoothly and does not cause air entrapment.

In addition, when attaching the second waterproof sheet 4, no adhesive is applied, so the first waterproof sheet 3 will not swell and cause blisters, making installation easier, and since no solvent is used, there is no risk of fire. It is harmless to humans and animals, and can be operated hygienically.

Further, in the waterproof sheet constructed by the method of the present invention, all layers are integrated with an i-adhesive adhesive, resulting in a watertight layer with extremely high waterproofing effect.

[Brief explanation of the drawing]

The drawing is a perspective view showing the state of implementation of the invention. DESCRIPTION OF SYMBOLS 1... Base surface, 2... Adhesive liquid, 3... First waterproof sheet, 3A... Adhesive treatment layer, 4... Second waterproof sheet, 4A... Polymer sheet, 4B ... Self-adhering layer, 4o
...Mesh sheet. ′-ゝ-1111

Claims (1)

[Claims] (1) An adhesive solution is applied onto the base surface, dried so that it becomes substantially non-tacky or weakly tacky when no pressure is applied, and an adhesive treatment that is non-tacky at room temperature is applied on top of this. 1 tarpaulin sheet is adhered, and then a second tarpaulin sheet, which is formed by laminating a polymer sheet, a self-adhesive layer, and a mesh sheet in this order, is attached to the surface of the first tarpaulin sheet. A laminated waterproof construction method characterized by bonding together surfaces.